This sync should happen automatically when internet is restored, but if you have an instance where that didn't happen you can trigger the app to try and sync by following these steps:
Open the OpsAnalitica App and let it load all of your checklists and schedules.
Turn your WiFi connection OFF.
Hit the Home Button or My Checklists button to refresh your My Checklists Page.
You should see the Red Cloud at the top of the screen.
Confirm you see the Red Cloud, if you don't see the Red Cloud you are still connected to the internet.
Turn your WIFI back on, restoring the internet connection
Hit the Home Button or My Checklists button to refresh your My Checklists Page.
With the internet restored, this should trigger the Pending Checklists Sync.
You should see a Submitting message next to each checklist as it gets submitted.